A055590 a(n) = 3^(sum of a(i) where i<n).

0, 1, 3, 81, 35917545547686059365808220080151141317043

Offset

0,3

Links

Table of n, a(n) for n=0..4.

Formula

a(n) = 3^A055591(n-1) = A055591(n)-A055591(n-1)

Example

a(3) = 3^(0+1+3) = 3^4 = 81

Crossrefs

Sequence in context: A183502 A325053 A134799 * A037111 A067202 A203494

Adjacent sequences: A055587 A055588 A055589 * A055591 A055592 A055593

Keyword

easy,nonn

Author

Henry Bottomley, May 26 2000

Status

approved